1 //===-- GDBRemoteCommunicationServerCommon.cpp ------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "GDBRemoteCommunicationServerCommon.h"
11 
12 #include <errno.h>
13 
14 // C Includes
15 
16 #ifdef __APPLE__
17 #include <TargetConditionals.h>
18 #endif
19 
20 // C++ Includes
21 #include <chrono>
22 #include <cstring>
23 
24 // Other libraries and framework includes
25 #include "lldb/Core/ModuleSpec.h"
26 #include "lldb/Host/Config.h"
27 #include "lldb/Host/File.h"
28 #include "lldb/Host/FileSystem.h"
29 #include "lldb/Host/Host.h"
30 #include "lldb/Host/HostInfo.h"
31 #include "lldb/Interpreter/Args.h"
32 #include "lldb/Symbol/ObjectFile.h"
33 #include "lldb/Target/FileAction.h"
34 #include "lldb/Target/Platform.h"
35 #include "lldb/Target/Process.h"
36 #include "lldb/Utility/Endian.h"
37 #include "lldb/Utility/JSON.h"
38 #include "lldb/Utility/Log.h"
39 #include "lldb/Utility/StreamGDBRemote.h"
40 #include "lldb/Utility/StreamString.h"
41 #include "llvm/ADT/Triple.h"
42 
43 // Project includes
44 #include "ProcessGDBRemoteLog.h"
45 #include "Utility/StringExtractorGDBRemote.h"
46 
47 #ifdef __ANDROID__
48 #include "lldb/Host/android/HostInfoAndroid.h"
49 #endif
50 
51 #include "llvm/ADT/StringSwitch.h"
52 
53 using namespace lldb;
54 using namespace lldb_private;
55 using namespace lldb_private::process_gdb_remote;
56 
57 #ifdef __ANDROID__
58 const static uint32_t g_default_packet_timeout_sec = 20; // seconds
59 #else
60 const static uint32_t g_default_packet_timeout_sec = 0; // not specified
61 #endif
62 
63 //----------------------------------------------------------------------
64 // GDBRemoteCommunicationServerCommon constructor
65 //----------------------------------------------------------------------
66 GDBRemoteCommunicationServerCommon::GDBRemoteCommunicationServerCommon(
67     const char *comm_name, const char *listener_name)
68     : GDBRemoteCommunicationServer(comm_name, listener_name),
69       m_process_launch_info(), m_process_launch_error(), m_proc_infos(),
70       m_proc_infos_index(0), m_thread_suffix_supported(false),
71       m_list_threads_in_stop_reply(false) {
72   RegisterMemberFunctionHandler(StringExtractorGDBRemote::eServerPacketType_A,
73                                 &GDBRemoteCommunicationServerCommon::Handle_A);
74   RegisterMemberFunctionHandler(
75       StringExtractorGDBRemote::eServerPacketType_QEnvironment,
76       &GDBRemoteCommunicationServerCommon::Handle_QEnvironment);
77   RegisterMemberFunctionHandler(
78       StringExtractorGDBRemote::eServerPacketType_QEnvironmentHexEncoded,
79       &GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded);
80   RegisterMemberFunctionHandler(
81       StringExtractorGDBRemote::eServerPacketType_qfProcessInfo,
82       &GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo);
83   RegisterMemberFunctionHandler(
84       StringExtractorGDBRemote::eServerPacketType_qGroupName,
85       &GDBRemoteCommunicationServerCommon::Handle_qGroupName);
86   RegisterMemberFunctionHandler(
87       StringExtractorGDBRemote::eServerPacketType_qHostInfo,
88       &GDBRemoteCommunicationServerCommon::Handle_qHostInfo);
89   RegisterMemberFunctionHandler(
90       StringExtractorGDBRemote::eServerPacketType_QLaunchArch,
91       &GDBRemoteCommunicationServerCommon::Handle_QLaunchArch);
92   RegisterMemberFunctionHandler(
93       StringExtractorGDBRemote::eServerPacketType_qLaunchSuccess,
94       &GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess);
95   RegisterMemberFunctionHandler(
96       StringExtractorGDBRemote::eServerPacketType_QListThreadsInStopReply,
97       &GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply);
98   RegisterMemberFunctionHandler(
99       StringExtractorGDBRemote::eServerPacketType_qEcho,
100       &GDBRemoteCommunicationServerCommon::Handle_qEcho);
101   RegisterMemberFunctionHandler(
102       StringExtractorGDBRemote::eServerPacketType_qModuleInfo,
103       &GDBRemoteCommunicationServerCommon::Handle_qModuleInfo);
104   RegisterMemberFunctionHandler(
105       StringExtractorGDBRemote::eServerPacketType_jModulesInfo,
106       &GDBRemoteCommunicationServerCommon::Handle_jModulesInfo);
107   RegisterMemberFunctionHandler(
108       StringExtractorGDBRemote::eServerPacketType_qPlatform_chmod,
109       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod);
110   RegisterMemberFunctionHandler(
111       StringExtractorGDBRemote::eServerPacketType_qPlatform_mkdir,
112       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir);
113   RegisterMemberFunctionHandler(
114       StringExtractorGDBRemote::eServerPacketType_qPlatform_shell,
115       &GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell);
116   RegisterMemberFunctionHandler(
117       StringExtractorGDBRemote::eServerPacketType_qProcessInfoPID,
118       &GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID);
119   RegisterMemberFunctionHandler(
120       StringExtractorGDBRemote::eServerPacketType_QSetDetachOnError,
121       &GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError);
122   RegisterMemberFunctionHandler(
123       StringExtractorGDBRemote::eServerPacketType_QSetSTDERR,
124       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR);
125   RegisterMemberFunctionHandler(
126       StringExtractorGDBRemote::eServerPacketType_QSetSTDIN,
127       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN);
128   RegisterMemberFunctionHandler(
129       StringExtractorGDBRemote::eServerPacketType_QSetSTDOUT,
130       &GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT);
131   RegisterMemberFunctionHandler(
132       StringExtractorGDBRemote::eServerPacketType_qSpeedTest,
133       &GDBRemoteCommunicationServerCommon::Handle_qSpeedTest);
134   RegisterMemberFunctionHandler(
135       StringExtractorGDBRemote::eServerPacketType_qsProcessInfo,
136       &GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo);
137   RegisterMemberFunctionHandler(
138       StringExtractorGDBRemote::eServerPacketType_QStartNoAckMode,
139       &GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode);
140   RegisterMemberFunctionHandler(
141       StringExtractorGDBRemote::eServerPacketType_qSupported,
142       &GDBRemoteCommunicationServerCommon::Handle_qSupported);
143   RegisterMemberFunctionHandler(
144       StringExtractorGDBRemote::eServerPacketType_QThreadSuffixSupported,
145       &GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported);
146   RegisterMemberFunctionHandler(
147       StringExtractorGDBRemote::eServerPacketType_qUserName,
148       &GDBRemoteCommunicationServerCommon::Handle_qUserName);
149   RegisterMemberFunctionHandler(
150       StringExtractorGDBRemote::eServerPacketType_vFile_close,
151       &GDBRemoteCommunicationServerCommon::Handle_vFile_Close);
152   RegisterMemberFunctionHandler(
153       StringExtractorGDBRemote::eServerPacketType_vFile_exists,
154       &GDBRemoteCommunicationServerCommon::Handle_vFile_Exists);
155   RegisterMemberFunctionHandler(
156       StringExtractorGDBRemote::eServerPacketType_vFile_md5,
157       &GDBRemoteCommunicationServerCommon::Handle_vFile_MD5);
158   RegisterMemberFunctionHandler(
159       StringExtractorGDBRemote::eServerPacketType_vFile_mode,
160       &GDBRemoteCommunicationServerCommon::Handle_vFile_Mode);
161   RegisterMemberFunctionHandler(
162       StringExtractorGDBRemote::eServerPacketType_vFile_open,
163       &GDBRemoteCommunicationServerCommon::Handle_vFile_Open);
164   RegisterMemberFunctionHandler(
165       StringExtractorGDBRemote::eServerPacketType_vFile_pread,
166       &GDBRemoteCommunicationServerCommon::Handle_vFile_pRead);
167   RegisterMemberFunctionHandler(
168       StringExtractorGDBRemote::eServerPacketType_vFile_pwrite,
169       &GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite);
170   RegisterMemberFunctionHandler(
171       StringExtractorGDBRemote::eServerPacketType_vFile_size,
172       &GDBRemoteCommunicationServerCommon::Handle_vFile_Size);
173   RegisterMemberFunctionHandler(
174       StringExtractorGDBRemote::eServerPacketType_vFile_stat,
175       &GDBRemoteCommunicationServerCommon::Handle_vFile_Stat);
176   RegisterMemberFunctionHandler(
177       StringExtractorGDBRemote::eServerPacketType_vFile_symlink,
178       &GDBRemoteCommunicationServerCommon::Handle_vFile_symlink);
179   RegisterMemberFunctionHandler(
180       StringExtractorGDBRemote::eServerPacketType_vFile_unlink,
181       &GDBRemoteCommunicationServerCommon::Handle_vFile_unlink);
182 }
183 
184 //----------------------------------------------------------------------
185 // Destructor
186 //----------------------------------------------------------------------
187 GDBRemoteCommunicationServerCommon::~GDBRemoteCommunicationServerCommon() {}
188 
189 GDBRemoteCommunication::PacketResult
190 GDBRemoteCommunicationServerCommon::Handle_qHostInfo(
191     StringExtractorGDBRemote &packet) {
192   StreamString response;
193 
194   // $cputype:16777223;cpusubtype:3;ostype:Darwin;vendor:apple;endian:little;ptrsize:8;#00
195 
196   ArchSpec host_arch(HostInfo::GetArchitecture());
197   const llvm::Triple &host_triple = host_arch.GetTriple();
198   response.PutCString("triple:");
199   response.PutCStringAsRawHex8(host_triple.getTriple().c_str());
200   response.Printf(";ptrsize:%u;", host_arch.GetAddressByteSize());
201 
202   const char *distribution_id = host_arch.GetDistributionId().AsCString();
203   if (distribution_id) {
204     response.PutCString("distribution_id:");
205     response.PutCStringAsRawHex8(distribution_id);
206     response.PutCString(";");
207   }
208 
209 #if defined(__APPLE__)
210   // For parity with debugserver, we'll include the vendor key.
211   response.PutCString("vendor:apple;");
212 
213   // Send out MachO info.
214   uint32_t cpu = host_arch.GetMachOCPUType();
215   uint32_t sub = host_arch.GetMachOCPUSubType();
216   if (cpu != LLDB_INVALID_CPUTYPE)
217     response.Printf("cputype:%u;", cpu);
218   if (sub != LLDB_INVALID_CPUTYPE)
219     response.Printf("cpusubtype:%u;", sub);
220 
221   if (cpu == ArchSpec::kCore_arm_any) {
222 // Indicate the OS type.
223 #if defined(TARGET_OS_TV) && TARGET_OS_TV == 1
224     response.PutCString("ostype:tvos;");
225 #elif defined(TARGET_OS_WATCH) && TARGET_OS_WATCH == 1
226     response.PutCString("ostype:watchos;");
227 #else
228     response.PutCString("ostype:ios;");
229 #endif
230 
231     // On arm, we use "synchronous" watchpoints which means the exception is
232     // delivered before the instruction executes.
233     response.PutCString("watchpoint_exceptions_received:before;");
234   } else {
235     response.PutCString("ostype:macosx;");
236     response.Printf("watchpoint_exceptions_received:after;");
237   }
238 
239 #else
240   if (host_arch.GetMachine() == llvm::Triple::aarch64 ||
241       host_arch.GetMachine() == llvm::Triple::aarch64_be ||
242       host_arch.GetMachine() == llvm::Triple::arm ||
243       host_arch.GetMachine() == llvm::Triple::armeb ||
244       host_arch.GetMachine() == llvm::Triple::mips64 ||
245       host_arch.GetMachine() == llvm::Triple::mips64el ||
246       host_arch.GetMachine() == llvm::Triple::mips ||
247       host_arch.GetMachine() == llvm::Triple::mipsel)
248     response.Printf("watchpoint_exceptions_received:before;");
249   else
250     response.Printf("watchpoint_exceptions_received:after;");
251 #endif
252 
253   switch (endian::InlHostByteOrder()) {
254   case eByteOrderBig:
255     response.PutCString("endian:big;");
256     break;
257   case eByteOrderLittle:
258     response.PutCString("endian:little;");
259     break;
260   case eByteOrderPDP:
261     response.PutCString("endian:pdp;");
262     break;
263   default:
264     response.PutCString("endian:unknown;");
265     break;
266   }
267 
268   uint32_t major = UINT32_MAX;
269   uint32_t minor = UINT32_MAX;
270   uint32_t update = UINT32_MAX;
271   if (HostInfo::GetOSVersion(major, minor, update)) {
272     if (major != UINT32_MAX) {
273       response.Printf("os_version:%u", major);
274       if (minor != UINT32_MAX) {
275         response.Printf(".%u", minor);
276         if (update != UINT32_MAX)
277           response.Printf(".%u", update);
278       }
279       response.PutChar(';');
280     }
281   }
282 
283   std::string s;
284   if (HostInfo::GetOSBuildString(s)) {
285     response.PutCString("os_build:");
286     response.PutCStringAsRawHex8(s.c_str());
287     response.PutChar(';');
288   }
289   if (HostInfo::GetOSKernelDescription(s)) {
290     response.PutCString("os_kernel:");
291     response.PutCStringAsRawHex8(s.c_str());
292     response.PutChar(';');
293   }
294 
295 #if defined(__APPLE__)
296 
297 #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
298   // For iOS devices, we are connected through a USB Mux so we never pretend
299   // to actually have a hostname as far as the remote lldb that is connecting
300   // to this lldb-platform is concerned
301   response.PutCString("hostname:");
302   response.PutCStringAsRawHex8("127.0.0.1");
303   response.PutChar(';');
304 #else  // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
305   if (HostInfo::GetHostname(s)) {
306     response.PutCString("hostname:");
307     response.PutCStringAsRawHex8(s.c_str());
308     response.PutChar(';');
309   }
310 #endif // #if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
311 
312 #else  // #if defined(__APPLE__)
313   if (HostInfo::GetHostname(s)) {
314     response.PutCString("hostname:");
315     response.PutCStringAsRawHex8(s.c_str());
316     response.PutChar(';');
317   }
318 #endif // #if defined(__APPLE__)
319 
320   if (g_default_packet_timeout_sec > 0)
321     response.Printf("default_packet_timeout:%u;", g_default_packet_timeout_sec);
322 
323   return SendPacketNoLock(response.GetString());
324 }
325 
326 GDBRemoteCommunication::PacketResult
327 GDBRemoteCommunicationServerCommon::Handle_qProcessInfoPID(
328     StringExtractorGDBRemote &packet) {
329   // Packet format: "qProcessInfoPID:%i" where %i is the pid
330   packet.SetFilePos(::strlen("qProcessInfoPID:"));
331   lldb::pid_t pid = packet.GetU32(LLDB_INVALID_PROCESS_ID);
332   if (pid != LLDB_INVALID_PROCESS_ID) {
333     ProcessInstanceInfo proc_info;
334     if (Host::GetProcessInfo(pid, proc_info)) {
335       StreamString response;
336       CreateProcessInfoResponse(proc_info, response);
337       return SendPacketNoLock(response.GetString());
338     }
339   }
340   return SendErrorResponse(1);
341 }
342 
343 GDBRemoteCommunication::PacketResult
344 GDBRemoteCommunicationServerCommon::Handle_qfProcessInfo(
345     StringExtractorGDBRemote &packet) {
346   m_proc_infos_index = 0;
347   m_proc_infos.Clear();
348 
349   ProcessInstanceInfoMatch match_info;
350   packet.SetFilePos(::strlen("qfProcessInfo"));
351   if (packet.GetChar() == ':') {
352     llvm::StringRef key;
353     llvm::StringRef value;
354     while (packet.GetNameColonValue(key, value)) {
355       bool success = true;
356       if (key.equals("name")) {
357         StringExtractor extractor(value);
358         std::string file;
359         extractor.GetHexByteString(file);
360         match_info.GetProcessInfo().GetExecutableFile().SetFile(file, false);
361       } else if (key.equals("name_match")) {
362         NameMatch name_match = llvm::StringSwitch<NameMatch>(value)
363                                    .Case("equals", NameMatch::Equals)
364                                    .Case("starts_with", NameMatch::StartsWith)
365                                    .Case("ends_with", NameMatch::EndsWith)
366                                    .Case("contains", NameMatch::Contains)
367                                    .Case("regex", NameMatch::RegularExpression)
368                                    .Default(NameMatch::Ignore);
369         match_info.SetNameMatchType(name_match);
370         if (name_match == NameMatch::Ignore)
371           return SendErrorResponse(2);
372       } else if (key.equals("pid")) {
373         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
374         if (value.getAsInteger(0, pid))
375           return SendErrorResponse(2);
376         match_info.GetProcessInfo().SetProcessID(pid);
377       } else if (key.equals("parent_pid")) {
378         lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
379         if (value.getAsInteger(0, pid))
380           return SendErrorResponse(2);
381         match_info.GetProcessInfo().SetParentProcessID(pid);
382       } else if (key.equals("uid")) {
383         uint32_t uid = UINT32_MAX;
384         if (value.getAsInteger(0, uid))
385           return SendErrorResponse(2);
386         match_info.GetProcessInfo().SetUserID(uid);
387       } else if (key.equals("gid")) {
388         uint32_t gid = UINT32_MAX;
389         if (value.getAsInteger(0, gid))
390           return SendErrorResponse(2);
391         match_info.GetProcessInfo().SetGroupID(gid);
392       } else if (key.equals("euid")) {
393         uint32_t uid = UINT32_MAX;
394         if (value.getAsInteger(0, uid))
395           return SendErrorResponse(2);
396         match_info.GetProcessInfo().SetEffectiveUserID(uid);
397       } else if (key.equals("egid")) {
398         uint32_t gid = UINT32_MAX;
399         if (value.getAsInteger(0, gid))
400           return SendErrorResponse(2);
401         match_info.GetProcessInfo().SetEffectiveGroupID(gid);
402       } else if (key.equals("all_users")) {
403         match_info.SetMatchAllUsers(
404             Args::StringToBoolean(value, false, &success));
405       } else if (key.equals("triple")) {
406         match_info.GetProcessInfo().GetArchitecture() =
407             HostInfo::GetAugmentedArchSpec(value);
408       } else {
409         success = false;
410       }
411 
412       if (!success)
413         return SendErrorResponse(2);
414     }
415   }
416 
417   if (Host::FindProcesses(match_info, m_proc_infos)) {
418     // We found something, return the first item by calling the get
419     // subsequent process info packet handler...
420     return Handle_qsProcessInfo(packet);
421   }
422   return SendErrorResponse(3);
423 }
424 
425 GDBRemoteCommunication::PacketResult
426 GDBRemoteCommunicationServerCommon::Handle_qsProcessInfo(
427     StringExtractorGDBRemote &packet) {
428   if (m_proc_infos_index < m_proc_infos.GetSize()) {
429     StreamString response;
430     CreateProcessInfoResponse(
431         m_proc_infos.GetProcessInfoAtIndex(m_proc_infos_index), response);
432     ++m_proc_infos_index;
433     return SendPacketNoLock(response.GetString());
434   }
435   return SendErrorResponse(4);
436 }
437 
438 GDBRemoteCommunication::PacketResult
439 GDBRemoteCommunicationServerCommon::Handle_qUserName(
440     StringExtractorGDBRemote &packet) {
441 #if !defined(LLDB_DISABLE_POSIX)
442   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
443   if (log)
444     log->Printf("GDBRemoteCommunicationServerCommon::%s begin", __FUNCTION__);
445 
446   // Packet format: "qUserName:%i" where %i is the uid
447   packet.SetFilePos(::strlen("qUserName:"));
448   uint32_t uid = packet.GetU32(UINT32_MAX);
449   if (uid != UINT32_MAX) {
450     std::string name;
451     if (HostInfo::LookupUserName(uid, name)) {
452       StreamString response;
453       response.PutCStringAsRawHex8(name.c_str());
454       return SendPacketNoLock(response.GetString());
455     }
456   }
457   if (log)
458     log->Printf("GDBRemoteCommunicationServerCommon::%s end", __FUNCTION__);
459 #endif
460   return SendErrorResponse(5);
461 }
462 
463 GDBRemoteCommunication::PacketResult
464 GDBRemoteCommunicationServerCommon::Handle_qGroupName(
465     StringExtractorGDBRemote &packet) {
466 #if !defined(LLDB_DISABLE_POSIX)
467   // Packet format: "qGroupName:%i" where %i is the gid
468   packet.SetFilePos(::strlen("qGroupName:"));
469   uint32_t gid = packet.GetU32(UINT32_MAX);
470   if (gid != UINT32_MAX) {
471     std::string name;
472     if (HostInfo::LookupGroupName(gid, name)) {
473       StreamString response;
474       response.PutCStringAsRawHex8(name.c_str());
475       return SendPacketNoLock(response.GetString());
476     }
477   }
478 #endif
479   return SendErrorResponse(6);
480 }
481 
482 GDBRemoteCommunication::PacketResult
483 GDBRemoteCommunicationServerCommon::Handle_qSpeedTest(
484     StringExtractorGDBRemote &packet) {
485   packet.SetFilePos(::strlen("qSpeedTest:"));
486 
487   llvm::StringRef key;
488   llvm::StringRef value;
489   bool success = packet.GetNameColonValue(key, value);
490   if (success && key.equals("response_size")) {
491     uint32_t response_size = 0;
492     if (!value.getAsInteger(0, response_size)) {
493       if (response_size == 0)
494         return SendOKResponse();
495       StreamString response;
496       uint32_t bytes_left = response_size;
497       response.PutCString("data:");
498       while (bytes_left > 0) {
499         if (bytes_left >= 26) {
500           response.PutCString("ABCDEFGHIJKLMNOPQRSTUVWXYZ");
501           bytes_left -= 26;
502         } else {
503           response.Printf("%*.*s;", bytes_left, bytes_left,
504                           "ABCDEFGHIJKLMNOPQRSTUVWXYZ");
505           bytes_left = 0;
506         }
507       }
508       return SendPacketNoLock(response.GetString());
509     }
510   }
511   return SendErrorResponse(7);
512 }
513 
514 GDBRemoteCommunication::PacketResult
515 GDBRemoteCommunicationServerCommon::Handle_vFile_Open(
516     StringExtractorGDBRemote &packet) {
517   packet.SetFilePos(::strlen("vFile:open:"));
518   std::string path;
519   packet.GetHexByteStringTerminatedBy(path, ',');
520   if (!path.empty()) {
521     if (packet.GetChar() == ',') {
522       uint32_t flags =
523           File::ConvertOpenOptionsForPOSIXOpen(packet.GetHexMaxU32(false, 0));
524       if (packet.GetChar() == ',') {
525         mode_t mode = packet.GetHexMaxU32(false, 0600);
526         Status error;
527         const FileSpec path_spec{path, true};
528         int fd = ::open(path_spec.GetCString(), flags, mode);
529         const int save_errno = fd == -1 ? errno : 0;
530         StreamString response;
531         response.PutChar('F');
532         response.Printf("%i", fd);
533         if (save_errno)
534           response.Printf(",%i", save_errno);
535         return SendPacketNoLock(response.GetString());
536       }
537     }
538   }
539   return SendErrorResponse(18);
540 }
541 
542 GDBRemoteCommunication::PacketResult
543 GDBRemoteCommunicationServerCommon::Handle_vFile_Close(
544     StringExtractorGDBRemote &packet) {
545   packet.SetFilePos(::strlen("vFile:close:"));
546   int fd = packet.GetS32(-1);
547   Status error;
548   int err = -1;
549   int save_errno = 0;
550   if (fd >= 0) {
551     err = close(fd);
552     save_errno = err == -1 ? errno : 0;
553   } else {
554     save_errno = EINVAL;
555   }
556   StreamString response;
557   response.PutChar('F');
558   response.Printf("%i", err);
559   if (save_errno)
560     response.Printf(",%i", save_errno);
561   return SendPacketNoLock(response.GetString());
562 }
563 
564 GDBRemoteCommunication::PacketResult
565 GDBRemoteCommunicationServerCommon::Handle_vFile_pRead(
566     StringExtractorGDBRemote &packet) {
567 #ifdef _WIN32
568   // Not implemented on Windows
569   return SendUnimplementedResponse(
570       "GDBRemoteCommunicationServerCommon::Handle_vFile_pRead() unimplemented");
571 #else
572   StreamGDBRemote response;
573   packet.SetFilePos(::strlen("vFile:pread:"));
574   int fd = packet.GetS32(-1);
575   if (packet.GetChar() == ',') {
576     uint64_t count = packet.GetU64(UINT64_MAX);
577     if (packet.GetChar() == ',') {
578       uint64_t offset = packet.GetU64(UINT32_MAX);
579       if (count == UINT64_MAX) {
580         response.Printf("F-1:%i", EINVAL);
581         return SendPacketNoLock(response.GetString());
582       }
583 
584       std::string buffer(count, 0);
585       const ssize_t bytes_read = ::pread(fd, &buffer[0], buffer.size(), offset);
586       const int save_errno = bytes_read == -1 ? errno : 0;
587       response.PutChar('F');
588       response.Printf("%zi", bytes_read);
589       if (save_errno)
590         response.Printf(",%i", save_errno);
591       else {
592         response.PutChar(';');
593         response.PutEscapedBytes(&buffer[0], bytes_read);
594       }
595       return SendPacketNoLock(response.GetString());
596     }
597   }
598   return SendErrorResponse(21);
599 
600 #endif
601 }
602 
603 GDBRemoteCommunication::PacketResult
604 GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
605     StringExtractorGDBRemote &packet) {
606 #ifdef _WIN32
607   return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
608                                    "vFile_pWrite() unimplemented");
609 #else
610   packet.SetFilePos(::strlen("vFile:pwrite:"));
611 
612   StreamGDBRemote response;
613   response.PutChar('F');
614 
615   int fd = packet.GetU32(UINT32_MAX);
616   if (packet.GetChar() == ',') {
617     off_t offset = packet.GetU64(UINT32_MAX);
618     if (packet.GetChar() == ',') {
619       std::string buffer;
620       if (packet.GetEscapedBinaryData(buffer)) {
621         const ssize_t bytes_written =
622             ::pwrite(fd, buffer.data(), buffer.size(), offset);
623         const int save_errno = bytes_written == -1 ? errno : 0;
624         response.Printf("%zi", bytes_written);
625         if (save_errno)
626           response.Printf(",%i", save_errno);
627       } else {
628         response.Printf("-1,%i", EINVAL);
629       }
630       return SendPacketNoLock(response.GetString());
631     }
632   }
633   return SendErrorResponse(27);
634 #endif
635 }
636 
637 GDBRemoteCommunication::PacketResult
638 GDBRemoteCommunicationServerCommon::Handle_vFile_Size(
639     StringExtractorGDBRemote &packet) {
640   packet.SetFilePos(::strlen("vFile:size:"));
641   std::string path;
642   packet.GetHexByteString(path);
643   if (!path.empty()) {
644     uint64_t Size;
645     if (llvm::sys::fs::file_size(path, Size))
646       return SendErrorResponse(5);
647     StreamString response;
648     response.PutChar('F');
649     response.PutHex64(Size);
650     if (Size == UINT64_MAX) {
651       response.PutChar(',');
652       response.PutHex64(Size); // TODO: replace with Host::GetSyswideErrorCode()
653     }
654     return SendPacketNoLock(response.GetString());
655   }
656   return SendErrorResponse(22);
657 }
658 
659 GDBRemoteCommunication::PacketResult
660 GDBRemoteCommunicationServerCommon::Handle_vFile_Mode(
661     StringExtractorGDBRemote &packet) {
662   packet.SetFilePos(::strlen("vFile:mode:"));
663   std::string path;
664   packet.GetHexByteString(path);
665   if (!path.empty()) {
666     Status error;
667     const uint32_t mode = File::GetPermissions(FileSpec{path, true}, error);
668     StreamString response;
669     response.Printf("F%u", mode);
670     if (mode == 0 || error.Fail())
671       response.Printf(",%i", (int)error.GetError());
672     return SendPacketNoLock(response.GetString());
673   }
674   return SendErrorResponse(23);
675 }
676 
677 GDBRemoteCommunication::PacketResult
678 GDBRemoteCommunicationServerCommon::Handle_vFile_Exists(
679     StringExtractorGDBRemote &packet) {
680   packet.SetFilePos(::strlen("vFile:exists:"));
681   std::string path;
682   packet.GetHexByteString(path);
683   if (!path.empty()) {
684     bool retcode = llvm::sys::fs::exists(path);
685     StreamString response;
686     response.PutChar('F');
687     response.PutChar(',');
688     if (retcode)
689       response.PutChar('1');
690     else
691       response.PutChar('0');
692     return SendPacketNoLock(response.GetString());
693   }
694   return SendErrorResponse(24);
695 }
696 
697 GDBRemoteCommunication::PacketResult
698 GDBRemoteCommunicationServerCommon::Handle_vFile_symlink(
699     StringExtractorGDBRemote &packet) {
700   packet.SetFilePos(::strlen("vFile:symlink:"));
701   std::string dst, src;
702   packet.GetHexByteStringTerminatedBy(dst, ',');
703   packet.GetChar(); // Skip ',' char
704   packet.GetHexByteString(src);
705   Status error = FileSystem::Symlink(FileSpec{src, true}, FileSpec{dst, false});
706   StreamString response;
707   response.Printf("F%u,%u", error.GetError(), error.GetError());
708   return SendPacketNoLock(response.GetString());
709 }
710 
711 GDBRemoteCommunication::PacketResult
712 GDBRemoteCommunicationServerCommon::Handle_vFile_unlink(
713     StringExtractorGDBRemote &packet) {
714   packet.SetFilePos(::strlen("vFile:unlink:"));
715   std::string path;
716   packet.GetHexByteString(path);
717   Status error(llvm::sys::fs::remove(path));
718   StreamString response;
719   response.Printf("F%u,%u", error.GetError(), error.GetError());
720   return SendPacketNoLock(response.GetString());
721 }
722 
723 GDBRemoteCommunication::PacketResult
724 GDBRemoteCommunicationServerCommon::Handle_qPlatform_shell(
725     StringExtractorGDBRemote &packet) {
726   packet.SetFilePos(::strlen("qPlatform_shell:"));
727   std::string path;
728   std::string working_dir;
729   packet.GetHexByteStringTerminatedBy(path, ',');
730   if (!path.empty()) {
731     if (packet.GetChar() == ',') {
732       // FIXME: add timeout to qPlatform_shell packet
733       // uint32_t timeout = packet.GetHexMaxU32(false, 32);
734       uint32_t timeout = 10;
735       if (packet.GetChar() == ',')
736         packet.GetHexByteString(working_dir);
737       int status, signo;
738       std::string output;
739       Status err =
740           Host::RunShellCommand(path.c_str(), FileSpec{working_dir, true},
741                                 &status, &signo, &output, timeout);
742       StreamGDBRemote response;
743       if (err.Fail()) {
744         response.PutCString("F,");
745         response.PutHex32(UINT32_MAX);
746       } else {
747         response.PutCString("F,");
748         response.PutHex32(status);
749         response.PutChar(',');
750         response.PutHex32(signo);
751         response.PutChar(',');
752         response.PutEscapedBytes(output.c_str(), output.size());
753       }
754       return SendPacketNoLock(response.GetString());
755     }
756   }
757   return SendErrorResponse(24);
758 }
759 
760 GDBRemoteCommunication::PacketResult
761 GDBRemoteCommunicationServerCommon::Handle_vFile_Stat(
762     StringExtractorGDBRemote &packet) {
763   return SendUnimplementedResponse(
764       "GDBRemoteCommunicationServerCommon::Handle_vFile_Stat() unimplemented");
765 }
766 
767 GDBRemoteCommunication::PacketResult
768 GDBRemoteCommunicationServerCommon::Handle_vFile_MD5(
769     StringExtractorGDBRemote &packet) {
770   packet.SetFilePos(::strlen("vFile:MD5:"));
771   std::string path;
772   packet.GetHexByteString(path);
773   if (!path.empty()) {
774     StreamGDBRemote response;
775     auto Result = llvm::sys::fs::md5_contents(path);
776     if (!Result) {
777       response.PutCString("F,");
778       response.PutCString("x");
779     } else {
780       response.PutCString("F,");
781       response.PutHex64(Result->low());
782       response.PutHex64(Result->high());
783     }
784     return SendPacketNoLock(response.GetString());
785   }
786   return SendErrorResponse(25);
787 }
788 
789 GDBRemoteCommunication::PacketResult
790 GDBRemoteCommunicationServerCommon::Handle_qPlatform_mkdir(
791     StringExtractorGDBRemote &packet) {
792   packet.SetFilePos(::strlen("qPlatform_mkdir:"));
793   mode_t mode = packet.GetHexMaxU32(false, UINT32_MAX);
794   if (packet.GetChar() == ',') {
795     std::string path;
796     packet.GetHexByteString(path);
797     Status error(llvm::sys::fs::create_directory(path, mode));
798 
799     StreamGDBRemote response;
800     response.Printf("F%u", error.GetError());
801 
802     return SendPacketNoLock(response.GetString());
803   }
804   return SendErrorResponse(20);
805 }
806 
807 GDBRemoteCommunication::PacketResult
808 GDBRemoteCommunicationServerCommon::Handle_qPlatform_chmod(
809     StringExtractorGDBRemote &packet) {
810   packet.SetFilePos(::strlen("qPlatform_chmod:"));
811 
812   auto perms =
813       static_cast<llvm::sys::fs::perms>(packet.GetHexMaxU32(false, UINT32_MAX));
814   if (packet.GetChar() == ',') {
815     std::string path;
816     packet.GetHexByteString(path);
817     Status error(llvm::sys::fs::setPermissions(path, perms));
818 
819     StreamGDBRemote response;
820     response.Printf("F%u", error.GetError());
821 
822     return SendPacketNoLock(response.GetString());
823   }
824   return SendErrorResponse(19);
825 }
826 
827 GDBRemoteCommunication::PacketResult
828 GDBRemoteCommunicationServerCommon::Handle_qSupported(
829     StringExtractorGDBRemote &packet) {
830   StreamGDBRemote response;
831 
832   // Features common to lldb-platform and llgs.
833   uint32_t max_packet_size = 128 * 1024; // 128KBytes is a reasonable max packet
834                                          // size--debugger can always use less
835   response.Printf("PacketSize=%x", max_packet_size);
836 
837   response.PutCString(";QStartNoAckMode+");
838   response.PutCString(";QThreadSuffixSupported+");
839   response.PutCString(";QListThreadsInStopReply+");
840   response.PutCString(";qEcho+");
841 #if defined(__linux__) || defined(__NetBSD__)
842   response.PutCString(";QPassSignals+");
843   response.PutCString(";qXfer:auxv:read+");
844 #endif
845 
846   return SendPacketNoLock(response.GetString());
847 }
848 
849 GDBRemoteCommunication::PacketResult
850 GDBRemoteCommunicationServerCommon::Handle_QThreadSuffixSupported(
851     StringExtractorGDBRemote &packet) {
852   m_thread_suffix_supported = true;
853   return SendOKResponse();
854 }
855 
856 GDBRemoteCommunication::PacketResult
857 GDBRemoteCommunicationServerCommon::Handle_QListThreadsInStopReply(
858     StringExtractorGDBRemote &packet) {
859   m_list_threads_in_stop_reply = true;
860   return SendOKResponse();
861 }
862 
863 GDBRemoteCommunication::PacketResult
864 GDBRemoteCommunicationServerCommon::Handle_QSetDetachOnError(
865     StringExtractorGDBRemote &packet) {
866   packet.SetFilePos(::strlen("QSetDetachOnError:"));
867   if (packet.GetU32(0))
868     m_process_launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
869   else
870     m_process_launch_info.GetFlags().Clear(eLaunchFlagDetachOnError);
871   return SendOKResponse();
872 }
873 
874 GDBRemoteCommunication::PacketResult
875 GDBRemoteCommunicationServerCommon::Handle_QStartNoAckMode(
876     StringExtractorGDBRemote &packet) {
877   // Send response first before changing m_send_acks to we ack this packet
878   PacketResult packet_result = SendOKResponse();
879   m_send_acks = false;
880   return packet_result;
881 }
882 
883 GDBRemoteCommunication::PacketResult
884 GDBRemoteCommunicationServerCommon::Handle_QSetSTDIN(
885     StringExtractorGDBRemote &packet) {
886   packet.SetFilePos(::strlen("QSetSTDIN:"));
887   FileAction file_action;
888   std::string path;
889   packet.GetHexByteString(path);
890   const bool read = true;
891   const bool write = false;
892   if (file_action.Open(STDIN_FILENO, FileSpec{path, false}, read, write)) {
893     m_process_launch_info.AppendFileAction(file_action);
894     return SendOKResponse();
895   }
896   return SendErrorResponse(15);
897 }
898 
899 GDBRemoteCommunication::PacketResult
900 GDBRemoteCommunicationServerCommon::Handle_QSetSTDOUT(
901     StringExtractorGDBRemote &packet) {
902   packet.SetFilePos(::strlen("QSetSTDOUT:"));
903   FileAction file_action;
904   std::string path;
905   packet.GetHexByteString(path);
906   const bool read = false;
907   const bool write = true;
908   if (file_action.Open(STDOUT_FILENO, FileSpec{path, false}, read, write)) {
909     m_process_launch_info.AppendFileAction(file_action);
910     return SendOKResponse();
911   }
912   return SendErrorResponse(16);
913 }
914 
915 GDBRemoteCommunication::PacketResult
916 GDBRemoteCommunicationServerCommon::Handle_QSetSTDERR(
917     StringExtractorGDBRemote &packet) {
918   packet.SetFilePos(::strlen("QSetSTDERR:"));
919   FileAction file_action;
920   std::string path;
921   packet.GetHexByteString(path);
922   const bool read = false;
923   const bool write = true;
924   if (file_action.Open(STDERR_FILENO, FileSpec{path, false}, read, write)) {
925     m_process_launch_info.AppendFileAction(file_action);
926     return SendOKResponse();
927   }
928   return SendErrorResponse(17);
929 }
930 
931 GDBRemoteCommunication::PacketResult
932 GDBRemoteCommunicationServerCommon::Handle_qLaunchSuccess(
933     StringExtractorGDBRemote &packet) {
934   if (m_process_launch_error.Success())
935     return SendOKResponse();
936   StreamString response;
937   response.PutChar('E');
938   response.PutCString(m_process_launch_error.AsCString("<unknown error>"));
939   return SendPacketNoLock(response.GetString());
940 }
941 
942 GDBRemoteCommunication::PacketResult
943 GDBRemoteCommunicationServerCommon::Handle_QEnvironment(
944     StringExtractorGDBRemote &packet) {
945   packet.SetFilePos(::strlen("QEnvironment:"));
946   const uint32_t bytes_left = packet.GetBytesLeft();
947   if (bytes_left > 0) {
948     m_process_launch_info.GetEnvironment().insert(packet.Peek());
949     return SendOKResponse();
950   }
951   return SendErrorResponse(12);
952 }
953 
954 GDBRemoteCommunication::PacketResult
955 GDBRemoteCommunicationServerCommon::Handle_QEnvironmentHexEncoded(
956     StringExtractorGDBRemote &packet) {
957   packet.SetFilePos(::strlen("QEnvironmentHexEncoded:"));
958   const uint32_t bytes_left = packet.GetBytesLeft();
959   if (bytes_left > 0) {
960     std::string str;
961     packet.GetHexByteString(str);
962     m_process_launch_info.GetEnvironment().insert(str);
963     return SendOKResponse();
964   }
965   return SendErrorResponse(12);
966 }
967 
968 GDBRemoteCommunication::PacketResult
969 GDBRemoteCommunicationServerCommon::Handle_QLaunchArch(
970     StringExtractorGDBRemote &packet) {
971   packet.SetFilePos(::strlen("QLaunchArch:"));
972   const uint32_t bytes_left = packet.GetBytesLeft();
973   if (bytes_left > 0) {
974     const char *arch_triple = packet.Peek();
975     m_process_launch_info.SetArchitecture(HostInfo::GetAugmentedArchSpec(arch_triple));
976     return SendOKResponse();
977   }
978   return SendErrorResponse(13);
979 }
980 
981 GDBRemoteCommunication::PacketResult
982 GDBRemoteCommunicationServerCommon::Handle_A(StringExtractorGDBRemote &packet) {
983   // The 'A' packet is the most over designed packet ever here with
984   // redundant argument indexes, redundant argument lengths and needed hex
985   // encoded argument string values. Really all that is needed is a comma
986   // separated hex encoded argument value list, but we will stay true to the
987   // documented version of the 'A' packet here...
988 
989   Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PROCESS));
990   int actual_arg_index = 0;
991 
992   packet.SetFilePos(1); // Skip the 'A'
993   bool success = true;
994   while (success && packet.GetBytesLeft() > 0) {
995     // Decode the decimal argument string length. This length is the
996     // number of hex nibbles in the argument string value.
997     const uint32_t arg_len = packet.GetU32(UINT32_MAX);
998     if (arg_len == UINT32_MAX)
999       success = false;
1000     else {
1001       // Make sure the argument hex string length is followed by a comma
1002       if (packet.GetChar() != ',')
1003         success = false;
1004       else {
1005         // Decode the argument index. We ignore this really because
1006         // who would really send down the arguments in a random order???
1007         const uint32_t arg_idx = packet.GetU32(UINT32_MAX);
1008         if (arg_idx == UINT32_MAX)
1009           success = false;
1010         else {
1011           // Make sure the argument index is followed by a comma
1012           if (packet.GetChar() != ',')
1013             success = false;
1014           else {
1015             // Decode the argument string value from hex bytes
1016             // back into a UTF8 string and make sure the length
1017             // matches the one supplied in the packet
1018             std::string arg;
1019             if (packet.GetHexByteStringFixedLength(arg, arg_len) !=
1020                 (arg_len / 2))
1021               success = false;
1022             else {
1023               // If there are any bytes left
1024               if (packet.GetBytesLeft()) {
1025                 if (packet.GetChar() != ',')
1026                   success = false;
1027               }
1028 
1029               if (success) {
1030                 if (arg_idx == 0)
1031                   m_process_launch_info.GetExecutableFile().SetFile(arg, false);
1032                 m_process_launch_info.GetArguments().AppendArgument(arg);
1033                 if (log)
1034                   log->Printf("LLGSPacketHandler::%s added arg %d: \"%s\"",
1035                               __FUNCTION__, actual_arg_index, arg.c_str());
1036                 ++actual_arg_index;
1037               }
1038             }
1039           }
1040         }
1041       }
1042     }
1043   }
1044 
1045   if (success) {
1046     m_process_launch_error = LaunchProcess();
1047     if (m_process_launch_error.Success())
1048       return SendOKResponse();
1049     LLDB_LOG(log, "failed to launch exe: {0}", m_process_launch_error);
1050   }
1051   return SendErrorResponse(8);
1052 }
1053 
1054 GDBRemoteCommunication::PacketResult
1055 GDBRemoteCommunicationServerCommon::Handle_qEcho(
1056     StringExtractorGDBRemote &packet) {
1057   // Just echo back the exact same packet for qEcho...
1058   return SendPacketNoLock(packet.GetStringRef());
1059 }
1060 
1061 GDBRemoteCommunication::PacketResult
1062 GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
1063     StringExtractorGDBRemote &packet) {
1064   packet.SetFilePos(::strlen("qModuleInfo:"));
1065 
1066   std::string module_path;
1067   packet.GetHexByteStringTerminatedBy(module_path, ';');
1068   if (module_path.empty())
1069     return SendErrorResponse(1);
1070 
1071   if (packet.GetChar() != ';')
1072     return SendErrorResponse(2);
1073 
1074   std::string triple;
1075   packet.GetHexByteString(triple);
1076 
1077   ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
1078   if (!matched_module_spec.GetFileSpec())
1079     return SendErrorResponse(3);
1080 
1081   const auto file_offset = matched_module_spec.GetObjectOffset();
1082   const auto file_size = matched_module_spec.GetObjectSize();
1083   const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1084 
1085   StreamGDBRemote response;
1086 
1087   if (uuid_str.empty()) {
1088     auto Result = llvm::sys::fs::md5_contents(matched_module_spec.GetFileSpec().GetPath());
1089     if (!Result)
1090       return SendErrorResponse(5);
1091     response.PutCString("md5:");
1092     response.PutCStringAsRawHex8(Result->digest().c_str());
1093   } else {
1094     response.PutCString("uuid:");
1095     response.PutCStringAsRawHex8(uuid_str.c_str());
1096   }
1097   response.PutChar(';');
1098 
1099   const auto &module_arch = matched_module_spec.GetArchitecture();
1100   response.PutCString("triple:");
1101   response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
1102   response.PutChar(';');
1103 
1104   response.PutCString("file_path:");
1105   response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
1106   response.PutChar(';');
1107   response.PutCString("file_offset:");
1108   response.PutHex64(file_offset);
1109   response.PutChar(';');
1110   response.PutCString("file_size:");
1111   response.PutHex64(file_size);
1112   response.PutChar(';');
1113 
1114   return SendPacketNoLock(response.GetString());
1115 }
1116 
1117 GDBRemoteCommunication::PacketResult
1118 GDBRemoteCommunicationServerCommon::Handle_jModulesInfo(
1119     StringExtractorGDBRemote &packet) {
1120   packet.SetFilePos(::strlen("jModulesInfo:"));
1121 
1122   StructuredData::ObjectSP object_sp = StructuredData::ParseJSON(packet.Peek());
1123   if (!object_sp)
1124     return SendErrorResponse(1);
1125 
1126   StructuredData::Array *packet_array = object_sp->GetAsArray();
1127   if (!packet_array)
1128     return SendErrorResponse(2);
1129 
1130   JSONArray::SP response_array_sp = std::make_shared<JSONArray>();
1131   for (size_t i = 0; i < packet_array->GetSize(); ++i) {
1132     StructuredData::Dictionary *query =
1133         packet_array->GetItemAtIndex(i)->GetAsDictionary();
1134     if (!query)
1135       continue;
1136     llvm::StringRef file, triple;
1137     if (!query->GetValueForKeyAsString("file", file) ||
1138         !query->GetValueForKeyAsString("triple", triple))
1139       continue;
1140 
1141     ModuleSpec matched_module_spec = GetModuleInfo(file, triple);
1142     if (!matched_module_spec.GetFileSpec())
1143       continue;
1144 
1145     const auto file_offset = matched_module_spec.GetObjectOffset();
1146     const auto file_size = matched_module_spec.GetObjectSize();
1147     const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");
1148 
1149     if (uuid_str.empty())
1150       continue;
1151 
1152     JSONObject::SP response = std::make_shared<JSONObject>();
1153     response_array_sp->AppendObject(response);
1154     response->SetObject("uuid", std::make_shared<JSONString>(uuid_str));
1155     response->SetObject(
1156         "triple",
1157         std::make_shared<JSONString>(
1158             matched_module_spec.GetArchitecture().GetTriple().getTriple()));
1159     response->SetObject("file_path",
1160                         std::make_shared<JSONString>(
1161                             matched_module_spec.GetFileSpec().GetPath()));
1162     response->SetObject("file_offset",
1163                         std::make_shared<JSONNumber>(file_offset));
1164     response->SetObject("file_size", std::make_shared<JSONNumber>(file_size));
1165   }
1166 
1167   StreamString response;
1168   response_array_sp->Write(response);
1169   StreamGDBRemote escaped_response;
1170   escaped_response.PutEscapedBytes(response.GetString().data(),
1171                                    response.GetSize());
1172   return SendPacketNoLock(escaped_response.GetString());
1173 }
1174 
1175 void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
1176     const ProcessInstanceInfo &proc_info, StreamString &response) {
1177   response.Printf(
1178       "pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
1179       proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1180       proc_info.GetUserID(), proc_info.GetGroupID(),
1181       proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
1182   response.PutCString("name:");
1183   response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
1184   response.PutChar(';');
1185   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1186   if (proc_arch.IsValid()) {
1187     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1188     response.PutCString("triple:");
1189     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1190     response.PutChar(';');
1191   }
1192 }
1193 
1194 void GDBRemoteCommunicationServerCommon::
1195     CreateProcessInfoResponse_DebugServerStyle(
1196         const ProcessInstanceInfo &proc_info, StreamString &response) {
1197   response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
1198                   ";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
1199                   proc_info.GetProcessID(), proc_info.GetParentProcessID(),
1200                   proc_info.GetUserID(), proc_info.GetGroupID(),
1201                   proc_info.GetEffectiveUserID(),
1202                   proc_info.GetEffectiveGroupID());
1203 
1204   const ArchSpec &proc_arch = proc_info.GetArchitecture();
1205   if (proc_arch.IsValid()) {
1206     const llvm::Triple &proc_triple = proc_arch.GetTriple();
1207 #if defined(__APPLE__)
1208     // We'll send cputype/cpusubtype.
1209     const uint32_t cpu_type = proc_arch.GetMachOCPUType();
1210     if (cpu_type != 0)
1211       response.Printf("cputype:%" PRIx32 ";", cpu_type);
1212 
1213     const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
1214     if (cpu_subtype != 0)
1215       response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
1216 
1217     const std::string vendor = proc_triple.getVendorName();
1218     if (!vendor.empty())
1219       response.Printf("vendor:%s;", vendor.c_str());
1220 #else
1221     // We'll send the triple.
1222     response.PutCString("triple:");
1223     response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
1224     response.PutChar(';');
1225 #endif
1226     std::string ostype = proc_triple.getOSName();
1227     // Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
1228     if (proc_triple.getVendor() == llvm::Triple::Apple) {
1229       switch (proc_triple.getArch()) {
1230       case llvm::Triple::arm:
1231       case llvm::Triple::thumb:
1232       case llvm::Triple::aarch64:
1233         ostype = "ios";
1234         break;
1235       default:
1236         // No change.
1237         break;
1238       }
1239     }
1240     response.Printf("ostype:%s;", ostype.c_str());
1241 
1242     switch (proc_arch.GetByteOrder()) {
1243     case lldb::eByteOrderLittle:
1244       response.PutCString("endian:little;");
1245       break;
1246     case lldb::eByteOrderBig:
1247       response.PutCString("endian:big;");
1248       break;
1249     case lldb::eByteOrderPDP:
1250       response.PutCString("endian:pdp;");
1251       break;
1252     default:
1253       // Nothing.
1254       break;
1255     }
1256     // In case of MIPS64, pointer size is depend on ELF ABI
1257     // For N32 the pointer size is 4 and for N64 it is 8
1258     std::string abi = proc_arch.GetTargetABI();
1259     if (!abi.empty())
1260       response.Printf("elf_abi:%s;", abi.c_str());
1261     response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
1262   }
1263 }
1264 
1265 FileSpec GDBRemoteCommunicationServerCommon::FindModuleFile(
1266     const std::string &module_path, const ArchSpec &arch) {
1267 #ifdef __ANDROID__
1268   return HostInfoAndroid::ResolveLibraryPath(module_path, arch);
1269 #else
1270   return FileSpec(module_path, true);
1271 #endif
1272 }
1273 
1274 ModuleSpec
1275 GDBRemoteCommunicationServerCommon::GetModuleInfo(llvm::StringRef module_path,
1276                                                   llvm::StringRef triple) {
1277   ArchSpec arch(triple);
1278 
1279   const FileSpec req_module_path_spec(module_path, true);
1280   const FileSpec module_path_spec =
1281       FindModuleFile(req_module_path_spec.GetPath(), arch);
1282   const ModuleSpec module_spec(module_path_spec, arch);
1283 
1284   ModuleSpecList module_specs;
1285   if (!ObjectFile::GetModuleSpecifications(module_path_spec, 0, 0,
1286                                            module_specs))
1287     return ModuleSpec();
1288 
1289   ModuleSpec matched_module_spec;
1290   if (!module_specs.FindMatchingModuleSpec(module_spec, matched_module_spec))
1291     return ModuleSpec();
1292 
1293   return matched_module_spec;
1294 }
1295